The Sisters' Lightship was a short-lived lesbian-feminist periodical, possibly running to only one issue. Volume 1, No. 1 is dated December, 1978. The cover depicts an apple on the sail, and the boat's name is the acronym for the Atlantic Provinces Political Lesbians for Equality.

It was named for the Three Sisters rock formation off Cape Chignecto. A lightship was a permanently moored ship which acted as a floating lighthouse, its beacons directing the way to safety around navigational hazards.